anthony



(No Model.) 2' Sheets-Sheet 1.

E. W. ANTHONY. DAMPER FOR HEATING swovns 0R FURNAGES.

No. 547,235. v I Patented Oct. 1, 1895.

WITNESSES INVEN'TEIR AN DREW REHAHANL PHO'IO-UmOYWASNIN GTO N,D b

(No Model.) 2 Sheets-Sheet 2.

- E. W. ANTHONY. DAMPER FOR HEATING swovns 0R FURNACES.

No. 547,235. Patented 0Ct. 1, 1895.

ANDREW B GRAHAM.PHOTOLm-IQWASNINGTUNEC both these objections.

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EDGAR W. ANTHONY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE SMITH &ANTHONY COMPANY, OF SAME PLACE.

DAMPER FOR HEATING STOVES OR FURNACES.

SPECIFICATION forming part of Letters IPatent No. 547,235, dated October1, 1895.

Application filed May 26, 1894- Serial No. 512,572. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDGAR WV. ANTHONY, a citizen of the United States,residing at Boston, in the county of Suffolk and State of Massachusetts,have invented a new and useful Improvement in Dampers for Heating Stovesor Furnaces,of which the following is a full, clear, and exactdescription, reference being had to the accompanyingdrawings, forming apart of this specification, in explaining its nature.

In most air-heating furnaces a pipe extends across the air-heatingchamber from the radiator-shell to the pipe leading to the chimney. Thispipe contains the passage connectin g the combustion-chamber with theflue and also with the downtake. It is desirable that there be a damperin this pipe between the combustion-chamber and the chimneypipe ordowntake, where one is used and dampers have been so located; but theiruse has been objectionable, in that it has been difficult to secure themin such pipe because of its position, and it has been especiallydifficult to remove a worn out or disabled one and substitute therefor-anew one. This was because the ordinary or old forms of damper anddamper-hanger were used, and out of this grew another defect, and thatwas the escape of gas from the combustion-chamber about the hole throughwhich the ordinary damperoperating rod or spindle extended, more or lessgas thereby leaking into the air-heating chamber. My present inventionovercomes It affords a means by which the damper may be easily removedand replaced or another one substituted, and it prevents the leakage ofgas into the air-heating chamber.

In the drawings, Figure 1 is a view in front elevation of the smoke-pipeand damper, a portion of the pipe being broken out to show theconstruction hereinafter described. Fig. 2 is a plan view thereof,representing the pipe as attached to the furnace or stove shell. Fig. 3is a View in elevation of a furnace partly broken away, showing theattachment of my device to an ordinary furnace.

In carrying my invention into efiect I prefer to use the pipe A, havinga flange a, by which it is secured to the radiator and forming thedirect escape-passage ct from the combustion-chamber to the pipe leadingto the chimney, and also having the downwardly-extending collar 6L2,which receives the pipe forming the indirect passage or downtake. Thispipe has at its forward end the damper B, which is secured in place bymeans of a pin 5 at its lower edge, which enters into a cup 1) arrangedto receive it, and a spindle 11 preferably square and extending througha hole 12 in the casting and entering the square holes 12 in the damper,the said holes being in line with each other. This provides a shortspindle, one that can be easily inserted into the holes of the damper.

To prevent the escape of gas about the spindle-hole there is cast aboutthe hole and at a suitable distance from it an upwardlyextending wall 0,and there is also cast with or attached to the pipe-casting, immediatelyabout the opening necessary for the spindle, an inner wall 0'. This,with the outer wall, forms an annular chamber 0 which is filled withsand and into which the edge of the inverted cup 0 carried by thespindle, enters, (see Fig. 1,) and there is thus established asand-joint around the spindle, through which gas cannot escape.

The spindle b is held in place partly by its weight and partly by themeans employed for turning it, which consists generally of the crank-armc and a rod 0 The inner wall a, as I have stated, may be cast, or it maybe formed by a threaded tube arranged to screw into the casting.

In Fig. 3 O is the air-chamber of the furnace and D is the downtake. Iattach my damper to the casting Awithin the air-chamber C. It isnecessary in this construction that the damper be secured to the castingA in such a manner that no passages are left by which gas might escapeinto the air-chamber O.

Having thus fully described my invention, I claim and desire to secureby Letters Patent of the United states 1. In a heating stove or furnace,the casting A forming the direct escape-port and having the opening forthe damper operating spindle and a chamber formed about said openingcontaining sand or similar material and the damper B and damper spindlepassing" through said opening and having an inverted cup which entersinto the sand or other material contained in the chamber, as and for thepurposes described.

2. In a heating stove or furnace, the combination of the castingA havingthe chamber 0 formed by the walls 0 c, as described and surrounding thedamper spindle hole, with 10 the damper B having the sockets I), theremovable spindle and the inverted cup 0 carried by the spindle andentering the chamber c and sand or similar material contained in saidchamber to establish a joint in connection with the cup 0 as and for thepurposes described.

EDGAR W. ANTHONY. Witnesses:

F. F. RAYMOND, 2d, J. M. DoLAN.

